Figure 5. Analyzing the process of spatio-temporal variation in the ice cover in the 2013–2014 and 2014–2015 winters. A similar process of CV calculation (dash box) was applied to RADARSAT-2 (FOW3) images acquired from November 2013 to February 2014, to monitor intra-annual variation of ice cover of the 2013–2014 winter (13 November–14 February).